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Significant Figures

Significant Figures. Making Your Measurements Count. Significant Figures. All of the numbers I know for sure… + 1 estimate. How do we count Sig Figs?. Measurements Non Zero # s Zeros Trapped Zeros Leading Zeros Trailing Zeros Decimal Point present Decimal Point absent.

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Significant Figures

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  1. Significant Figures Making Your Measurements Count

  2. Significant Figures • All of the numbers I know for sure… + 1 estimate.

  3. How do we count Sig Figs? • Measurements • Non Zero #s • Zeros • Trapped Zeros • Leading Zeros • Trailing Zeros • Decimal Point present • Decimal Point absent

  4. How do we count Sig Figs? • Exact Numbers (Counted items and some conversion factors) • Unlimited or Infinite Significance

  5. Rules For Multiplying and Dividing • The Weak Link Rule • Your answer must have the same number of significant figures as the number in the operation which has the ___________ ___________ of significant figures. • Remember how to round!!

  6. Rules For Adding and Subtracting • The Weak Link Rule • Your answer must have the same number of ______________________as the number in the operation which has the _________ __________ of _____________________. • Why the add/subtract rule is seldom used in lab. • Why it is used in % error calculations.

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